Q4 of 26 Page 1

Which would undergo SN1 reactions faster in the following pair:



The SN1 reaction involves formation of a carbocation intermediate. During SN1 reaction carbocation (i) and (ii) are formed. Out (i) and (ii), (ii) is more stable due to +I effect of two methyl groups.


Thus CH3—CH(Br)—CH3 gives faster SN1 reaction than CH3-CH2-CH2-Br.


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